Mechanical rotary device

ABSTRACT

A mechanism for producing a low power output and which is accordingly adaptable for moving relatively light weight objects, the mechanism consisting of a base upon which a pair of spaced apart pedestals are mounted, the pedestals supporting a stationary shaft to which a housing assembly positioned between the pedestals is secured, the housing containing a sprocket mounted freely rotatable on the shaft but being attached thereto by means of spiral leaf spring, the sprocket driving a second sprocket on a spindal mounted on an eccentric part of the housing so to rotate around the shaft, the spindal having a first gear fastened thereto which through an idle gear engages a gear mounted rotatably free on the shaft and which is integral with a cylindrical hub provided with openings there around that are selectively engageable by a pin slidable supported upon the pedestal.

United States Patent 1 Neuman [1111 3,744,592 1 July 10, 1973 1MECHANICAL ROTARY DEVICE [76] inventor: Albert ll. Neuman, 1089(andlcwood Road. Elgin. 111. 601 20 [22] Filed: Mar. 22, 1972 [21] Appl.No.: 236,880

[52] US. Cl. 185/37, 74/78l R, 185/39 [51] Int. Cl. F03g 1/00 [58] Fieldof Search 185/37, 39;

[56] References Cited UNITED STATES PATENTS 1,723,484 8/1929 Krepps185/37 297,725 4/1884 Stansbury.'.. 185/39 702,243 6/1902 Parcells74/781 R 836,853 11/1906 Anderson... 185/37 X 1,681,393 8/1928 Burton185/37 Primary Examiner-Allan D. l-lerrmann [57] ABSTRACT A mechanismfor producing a low power output and which is accordingly adaptable formoving relatively light weight objects, the mechanism consisting of abase upon which a pair of spaced apart pedestals are mounted, thepedestals supporting a stationary shaft to which a housing assemblypositioned between the pedestals is secured, the housing containing asprocket mounted freely rotatable on the shaft but being attachedthereto by means of spiral leaf spring, the sprocket driving a secondsprocket on a spindal mounted on an eccentric part of the housing so torotate around the shaft, the spindal having a first gear fastenedthereto which through an idle gear engages a gear mounted rotatably freeon the shaft and which is integral with a cylindrical hub provided withopenings there around that are selectively engageable by a pin slidablesupported upon the pedestal.

3 Claims, 5 Drawing Figures MECHANICAL ROTARY DEVICE This inventionrelates generally to drive mechanisms.

A principal object of the present invention is to provide a mechanicalrotary device for producing a low power output.

Another object of the present invention is to provide a mechanicalrotary device for producing a low power output that may be used formovable light weight objects.

Still another object of the present invention is to provide a mechanicaldevice which accordingly would be suitable for incorporating intoconstructions such as are used in movable advertising wherein parts madeof cardboard or paper are moved so to attract the attention of aprospective purchaser.

Still another purpose of the present invention is to provide amechanical rotary device in which no external source of energy isrequired, other than the necessity of a person winding up a clock mainspring.

Still another purpose of the present invention is to provide amechanical rotary device wherein the clock main spring will not unwindonce it is wound up.

Other objects of the present invention are to provide a mechanicalrotary device which is simple in design, inexpensive to manufacture,rugged in construction, easy to use and efficient in operation.

These and other objects will be readily evident upon a study of thefollowing specification and the accompanying drawing wherein:

FIG. 1 is a side elevation view of the present invention.

FIG. 2 is an end view taken in the direction 2-2 of FIG. 1.

FIG. 3 is a cross sectional view of the spring mechanism as viewed online 3--3 of FIG. 1.

FIG. 4 is an end view taken on line 44 of FIG. 1.

FIG. 5 is a schematic diagram shown in perspective and illustrating theoperating components of the present invention.

Referring now the drawings in detail, the reference numeral represents amechanical rotary device according to the present invention whereinthere is a face 11 upon which there are a pair of spaced apart pedestalsl2 and 13 secured thereto by means of mounting bolts 14.

A stationary shaft 15 is mounted upon the pedestals l2 and 13, and isstationarily secured thereto by means of set screws 16. The stationaryshaft 15 extends accross a space 17 between the pedestals 12 and 13,andacylindricalconfigurated housing 18 with a circular housing cover 19secured thereto are mounted rotatable free upon the shaft 15, thehousing and housing cover being located within the space 17 between thepedestal. Accordingly the housing cover 19 is secured to the housing bymeans of screws 20 located around the edge area of the housing cover andhousing. Accordingly the housing assembly in order to be rotatable onthe stationary shaft 15 include a ball bearing 21 in the housing and aball bearing 22 in the housing cover.

At an eccentric part of the housing unit, there is a transverseextending spindal 22 supported at one end in a ball bearing 23 in thehousing, and at its other end supported in a ball bearing 24 inthe'housing cover. Accordingly the spindal 22 abridges a central space25 within the interior of the housing unit.

A spiral leaf spring 26 is fitted around the stationary shaft 15, aninner end of the spring 26 being secured by means of pin 27 to thestationary shaft 15, and the outer end of the spring 26 being attachedby means of pin 28 to the inner side of a cylindrical spring case 29 andwhich is attached on one end wall 30 to a first sprocket 31 that ismounted rotatably free upon the stationary shaft 15. A roller chain 32is passed around the first sprocket 31 and a second sprocket 31' that isstationarily mounted on the spindal v22 by means of a set screw 32' in ahub of the second sprocket 31.

A first gear 33 is stationarily mounted on the spindal 22 by means of aset screw 34 in the hub of the first gear. The first gear 33 toothinglyengages an idler gear 35 which toothingly engages a last. gear 36mounted rotatably free on the stationary shaft 15. The idler gear 35 ismounted upon an adjustable spindal 37 in a suitable bushing 38 supportedin a slot 39, of the housing cover.

The last gear 36 is integral with a hub 40 that extends through the ballbearing 22 and outwardly of the housing cover, and the outer end of thehub 40 is provided with a plurality of pin openings 41 around the sidethereof, the pin openings 41 being selectively engageable with a lockingpin 42 supported upon a block 43 which is mounted upon the pedestal 12.

A pinion gear 44 is integral with a flange 45, the pinion gear andflange having a central opening there through so that the stationaryshaft 15 extends there through, and the flange 45 is secured to thehousing 18 by means of screws 46. The pinion gear 44 toothingly engagesa large gear 47 fastened on an output shaft 48 supported rotatably freein ball bearings 49 of the pedestal 13.

In operative use, with pin 42 engaged in one of the openings 41., themechanism is wound up by rotating the housing unit around the stationaryshaft so that the spring 26 becomes wound up. The mechanism thus energized is adaptable to provide a low power output to the output shaft48 so that it may be used for moving light weight objects such asadvertising matter made up of cardboard or paper. The extending end ofshaft 15 optionally can be used for another complete housing unit forincreased power, if so desired.

What I now claim is:

1. In a mechanical rotary device, the combination of a base, a pair ofspaced apart pedestals mounted upon said base, said base supporting astationary shaft secured to said pedestals by means of said screws, anda housing unit positioned between said pedestals being mounted rotatablefree upon said stationary shaft, said housing unit including acylindrical housing and a circular housing cover secured thereto so toform a housing chamber therewithin, said chamber containing a springdriven mechanism, said spring driven mechanism comprising a leaf spiralspring fitted around said stationary shaft, an inner end of said spiralspring being secured to said stationary shaft, an outer end of saidspring being secured to a housing around said spring and which is firmlysecured to a side of a first sprocket mounted rotatably free upon saidstationary shaft, said first sprocket by means of an endless rollerch'ain driving a second sprocket secured upon a spindle extendingtransversely through an eccentric part of said housing unit, saidspindle being supported rotatably free in bearings of said housing unit,and said spindle having a first gear secured thereto, said first geartoothingly engaging an idler gear which tootlhingly engages a last gearmounted rotatably free upon said stationary shaft.

3. The combination as set forth in claim 2 wherein a pinion gearintegral with a flange has a clearance open-' ing there through for saidstationary shaft and is mounted to a side of said housing unit, saidpinion gear ing pin supported slideably free on a block secured to 5engaging a large gear mounted on an output shaft.

1. In a mechanical rotary device, the combination of a base, a pair ofspaced apart pedestals mounted upon said base, said base supporting astationary shaft secured to said pedestals by means of said screws, anda housing unit positioned between said pedestals being mounted rotatablefree upon said stationary shaft, said housing unit including acylindrical housing and a circular housing cover secured thereto so toform a housing chamber therewithin, said chamber containing a springdriven mechanism, said spring driven mechanism comprising a leaf spiralspring fitted around said stationary shaft, an inner end of said spiralspring being secured to said stationary shaft, an outer end of saidspring being secured to a housing around said spring and which is firmlysecured to a side of a first sprocket mounted rotatably free upon saidstationary shaft, said first sprocket by means of an endless rollerchain driving a second sprocket secured upon a spindle extendingtransversely through an eccentric part of said housing unit, saidspindle being supported rotatably free in bearings of said housing unit,and said spindle having a first gear secured thereto, said first geartoothingly engaging an idler gear which toothingly engages a last gearMounted rotatably free upon said stationary shaft.
 2. The combination asset forth in claim 1 wherein said last gear has a hub extendingoutwardly of said housing unit, said hub having a plurality of pinopenings around the side thereof for selectively engaging a locking pinsupported slideably free on a block secured to one of said pedestals. 3.The combination as set forth in claim 2 wherein a pinion gear integralwith a flange has a clearance opening there through for said stationaryshaft and is mounted to a side of said housing unit, said pinion gearengaging a large gear mounted on an output shaft.